I bought a house and found a lot of water leakage when I closed it. What if the developer and the property refuse to take responsibility?

This is the quality of the house and should be the responsibility of the real estate company. You can appeal to the relevant departments. The reason of wall seepage is 1. Moisture caused by condensed water: In the past, some houses had no insulation on their walls. In winter, the wall is cold and hot, which will form condensed water in the wall, making the wall wet and the whole wall wet. This situation is usually better in summer, but the mildew left behind will still affect the appearance. 2。 The water leakage of the embedded water pipes in the wall causes the wall to be wet: this situation usually occurs in the bathroom, or at the top or on the wall, usually at the joint of the embedded water pipes. This includes whether there is water leakage in your wall and upstairs neighbor's water pipe, and whether there is water inflow in the partition water.

3。 The waterproof performance of the upstairs floor is not good enough, which leads to the wet wall: the waterproof performance of the upstairs floor is not good enough, and the waterproof performance of the upstairs bathroom wall and floor is not good enough. Once there is water in the toilet, it will slowly penetrate into your body. The joint between the upstairs water pipe and the ground is not waterproof: if there is water seepage near your home and upstairs water pipe, it is likely that the joint between the upstairs water pipe and the ground is not waterproof, and water remains along the water pipe, resulting in water seepage on the roof. 5。 Moldy wall caused by construction quality during decoration: when painting the wall finish during decoration, the first wall finish did not dry thoroughly, and when painting the wall finish for the second time, the water vapor in the wall did not evaporate, resulting in damp and moldy wall.

How to deal with wall leakage: 1. Leakage on both sides of window frame: compaction grouting method can be used. However, because the leakage on both sides generally comes from the open space water at the top of the window frame, it is necessary to grout at the top of the window frame. Grouting data, brand, standard and shelf life must be marked. 2。 External wall leakage: the compaction grouting method cannot be selected for brick wall leakage. Exterior walls shall not be directly coated with waterproof coating. If painted directly, the exterior wall will darken, resulting in an ugly overall appearance.

Therefore, the treatment of waterproof coating should be: peel off the tiles on the external wall, apply waterproof coating, and then put the tiles back in their original places. In addition, indicate the brand, standard and shelf life of waterproof coating. Let's determine the direction of water leakage corresponding to the house, take out the bricks, fill in the vacant places, and put the bricks back. 3。 After all repairs, it is necessary to carry out a 24-hour water spray test on the leaking external wall to check whether there is water leakage. If it still leaks, continue to repair it.